ProSoft Technology PTQ-101M - Manual (Page 130)

PTQ-101M ♦ Quantum Platform Reference
IEC 60870-5-101 Master Communication Module
Page 130 of 181 ProSoft Technology, Inc.
May 14, 2008
Another important concept to understand is the direction of data transfer for the
different data types with reference to the controller. The following illustration
shows the data types (monitored data) that are transferred from the module to
the processor.
Read Data Input Data Types
M_SP_NA_1
M_DP_NA_1
M_ST_NA_1
M_BO_NA_1
M_ME_NTA_1
M_ME_NB_1
M_ME_NC_1
M_IT_NA_1
The next diagram shows the movement of control data from the processor to the
module. This data is then sent to the controlled devices on the serial networks.
Write Data Output Data Types
C_SC_NA_1
C_DC_NA_1
C_RC_NA_1
C_SE_NA_1
C_SE_NB_1
C_SE_NC_1
C_BO_NA_1
As blocks are transferred between the module and the processor, each block
contains block identification codes that define the content or function of the block
of data transferred. The block identification codes used by the module are
displayed in the following table:
Block Range Descriptions
0 Null block. Used for handshaking
1 Read or write data. Used for handshaking
9250 Status Data
9901 User Constructed Command
9902 Command Control Block (Add command to Command List Queue)
9903 Event Messages from Master port
9950 Command List Error data
9970 Set PLC time using module's time
9971 Set module's time using PLC time
9998 Warm Boot Request from PLC (Block contains no data)
9999 Cold Boot Request from PLC (Block contains no data)
Block identification codes 9901 to 9999 are used for special control blocks to
control the module. Each of these blocks is discussed in the following topics.